DE102018009229B4 - Vehicle equipment part - Google Patents

Abstract

Vehicle equipment part with a movable first part and a second part fixed to the vehicle, the first part being guided on the second part by means of a guide device (43), the guide device (43) comprising at least one toothed rail (22a, 22b, 24a, 24b) which with a gear (21a, 21b, 23a, 23b) is in engagement, wherein the rack (22a, 22b, 24a, 24b) is assigned to one of the parts and the gear (21a, 21b, 23a, 23b) is assigned to the other part, thereby characterized in that the guide device (43) additionally comprises a tolerance compensation device which comprises at least one running rail (31a, 31b, 37a, 37b) which is assigned to one of the parts and which engages with an impeller (25a, 25b, 27a, 27b) which is assigned to the other of the parts, the running wheel (25a, 25b, 27a, 27b) and / or the running rail (31a, 31b, 37a, 37b) being designed to be elastically deformable and between the running rail (31a, 31b, 37a , 37b) and the impeller (25a, 25b, 27a, 27b) an interference fit is formed, so that the interacting gears (21a, 21b, 23a, 23b) of the first part and the second part are loaded in a defined position.

Description

The invention relates to a vehicle equipment part with a first part and a second part that is movable relative to the first part.

In the DE 10 2009 038 631 A1 a headrest is described which has a base body which can be mounted on the backrest of a vehicle seat by means of support rods. A headrest part is mounted on the base body so that it can be moved forwards and backwards relative to the base body. To guide the head support part on the base body, cooperating teeth are formed on the base body and on the head support part. The headrest is provided with a backlash compensation device. The lash adjuster comprises elastic bearing means which load the interacting teeth of the head support part and the base body in contact.

From WO 2009/065 603 A1 a locking device, in particular for a headrest ( 4th ) for a vehicle seat, known. This includes a first section ( 11 ), which can be moved from a position of use along a direction of displacement into a comfort position, with a relative movement of a second part ( 12th ) compared to the first section ( 11 ) and / or opposite a third section ( 13th ) about an axis of rotation essentially parallel to the direction of displacement ( 19th ) is provided. Between the first section ( 11 ) and the second section ( 12th ) and / or between the second section ( 12th ) and the third section ( 13th ) is both a blocking device ( 30th ) as well as a sliding device ( 40 ) arranged.

The object of the invention was to create a vehicle equipment part which is easy to manufacture and has a functionally reliable tolerance compensation in the guide device of the head rest part.

The object was achieved by a vehicle equipment part with the features of claim 1.

The vehicle equipment part comprises a first part and a second part fixed to the vehicle, the first part being guided on the second part so as to be movable relative to the second part by means of a guide device. The guide device has at least one toothed rail which is in engagement with a toothed wheel, the toothed rail being assigned to one of the parts and the toothed wheel being assigned to the other part.

In addition, the guide device comprises a tolerance compensation which comprises at least one running rail which is assigned to one of the parts and which is in engagement with a running wheel which is assigned to the other of the parts. For example, the running rail is assigned to the first part and the impeller to the second part. The running wheel and / or the running rail is designed to be elastically deformable and a press fit is formed between the running rail and the running wheel, so that the cooperating teeth of the first part and the second part are loaded in a certain direction with respect to at least one spatial dimension. In this way, noises can be avoided that occur due to an uncontrolled relative movement of the cooperating toothings.

According to a simple embodiment, the guide device comprises a toothed wheel and a toothed rail. According to an alternative embodiment, the guide device has, for example, two toothed rails and two toothed wheels. In this way it is possible to guide areas of the piece of equipment that are spaced apart from one another. The areas of the equipment part can be, for example, side areas.

For example, two gears are assigned to one gear shaft. A synchronization of the gears can thus be achieved because they are connected in terms of movement by means of the shaft. This prevents one area of the piece of equipment from moving more slowly than another area and thus jamming the first part.

According to a particular embodiment, the guide device comprises two gearwheel shafts, each gearwheel shaft being provided with at least one gearwheel, in particular with two gearwheels, and each gearwheel being in engagement with a toothed rail.

For example, at least one gear wheel of a first gear wheel shaft and one gear wheel each of a second gear wheel shaft mesh with one another. A synchronism of the gearwheel shafts is achieved in this way.

The guide device has, for example, at least a pair of running wheels and running rails. By means of the pair of running wheel and running rail, the interacting toothing of the gear wheel and the toothed rail are loaded into engagement, in such a way that one of the toothing is pressed against the other toothing. This has the consequence that the toothing does not move in an uncontrolled manner into different relative positions, so that noises are prevented.

In particular, a force acts on the toothed wheel - caused by the pressure device - which is directed approximately perpendicular to a longitudinal axis of the toothed rail and loads the toothed wheel in engagement with the toothed rail. The impeller and / or the running rail are elastically deformable Formed material, which forms a restoring force in the initial shape in the event of elastic deformation. Due to the deformation of the impeller during installation, a force acts on the gear because the impeller is connected to the gear. The contact surface between the running wheel and the running rail can, for example, be designed without a structure. Alternatively, however, the contact surface could also have a structure.

The impeller can, for example, be connected directly or indirectly to the gear. E.g. the impeller is molded onto the gear. Alternatively, e.g. the impeller is connected to the gearwheel via a shaft. In this case, the bearing of the shaft must allow a corresponding movement of the shaft.

For example, at least one running wheel is assigned to a gear wheel shaft and at least one running rail which cooperates with the running wheel is assigned to a toothed rail that interacts with a gear wheel of the gear wheel shaft.

In particular, a running wheel is assigned to each gear wheel and a running rail is assigned to each toothed rail, the respective pair of running wheel and running rail being in engagement. In this way, all of the cooperating teeth are optimally loaded into a defined relative position.

At least one pair of the running wheel and the running rail are arranged adjacent to, for example, a pair of the toothed wheel and the toothed rail. For example, the gear wheel and the running wheel as well as the toothed rail and the running rail are arranged directly next to one another. For example, they can be molded in one piece.

At least one of the parts of the toothed wheel and toothed rail as well as the impeller and running rail can be made of plastic. Alternatively, however, other materials, in particular metal, can also be used.

The vehicle equipment part is, for example, a headrest, the first part being a headrest part which is movable relative to a base as the second part.

The vehicle equipment part is, for example, an armrest, the first part being an armrest that is adjustable in the longitudinal direction or a height-adjustable armrest, which is guided on a base as the second part.

• 1 eine Explosionsdarstellung einer erfindungsgemäßen Kopfstütze als Fahrzeugausstattungsteil im Sinne der Erfindung,
• 2 eine perspektivische Darstellung der Kopfstütze,
• 3 eine Seitenansicht der Kopfstütze,
• 4 eine perspektivische Darstellung einer hinteren Blende der Kopfstütze als Einzelteildarstellung,
• 5 eine perspektivische Darstellung einer Baugruppe aus Basis, Lagerelementen des Kopfanlageteils und hinterer Blende,
• 6 eine Darstellung in Anlehnung an 5, wobei sich eine Verriegelungsvorrichtung in der Löseposition befindet,
• 7 eine perspektivische rückwärtige Darstellung der an Tragstangen geführten Basis sowie der Lagerelemente,
• 8 eine Rückansicht der Basis mit den Lagerelementen,
• 9 eine Schnittansicht gemäß Schnittlinie A - A in 8, wobei von dem Basisteil lediglich die Zahnradwellen dargestellt sind und wobei die Schraffur der Übersichtlichkeit halber nicht dargestellt ist,
• 10 eine Schnittansicht gemäß Schnittlinie B - B in 8, wobei von dem Basisteil lediglich die Zahnradwellen dargestellt sind und wobei die Schraffur der Übersichtlichkeit halber nicht dargestellt ist.

Further advantages result from the description of an exemplary embodiment shown schematically in the figures. Show it:

• 1 an exploded view of a headrest according to the invention as a vehicle equipment part within the meaning of the invention,
• 2 a perspective view of the headrest,
• 3 a side view of the headrest,
• 4th a perspective view of a rear panel of the headrest as an illustration of individual parts,
• 5 a perspective view of an assembly consisting of the base, bearing elements of the headrest part and the rear panel,
• 6th a representation based on 5 with a locking device in the release position,
• 7th a perspective rear view of the base guided on support rods and the bearing elements,
• 8th a rear view of the base with the bearing elements,
• 9 a sectional view according to section line A - A in 8th , whereby only the gear shafts of the base part are shown and the hatching is not shown for the sake of clarity,
• 10 a sectional view according to section line B - B in 8th , wherein only the gear shafts of the base part are shown and the hatching is not shown for the sake of clarity.

An exemplary embodiment of the invention is described by way of example in the following description of the figures, also with reference to the schematic drawings. For the sake of clarity, the same or comparable parts or elements or areas are denoted by the same reference numerals, sometimes with the addition of lowercase letters, also insofar as different exemplary embodiments are concerned.

Features that are described, illustrated or disclosed only in relation to one exemplary embodiment can also be provided in any other exemplary embodiment of the invention within the scope of the invention. Such modified exemplary embodiments - even if they are not shown in the drawings - are also covered by the invention.

All of the features disclosed are essential to the invention per se. The disclosure content of the DE 10 2009 038 631 A1 fully included in terms of content, also for the purpose of including individual or several features of the objects disclosed therein in one or in several claims of the present claims Registration to include. Such modified exemplary embodiments are also encompassed by the invention - even if they are not shown in the drawings.

A headrest as a whole is denoted in the figures by the reference number 10 designated.

The headrest 10 includes a base 11 which on support poles 12a and 12b is stored. Alternative to the support bars 12a and 12b a support rod bracket could also be used. To guide the base 11 on the support bars 12a and 12b are warehouse depositors 44a and 44b at the base 11 attached by the support rods 12a and 12b be penetrated. The base 11 can be so relative to the support bars 12a and 12b are moved into different positions in the directions z1 and z2.

A pen 46 reaches through an elongated hole 47a the base 11 and is on the support rod 12a attached. Another pen 46 reaches through an elongated hole 47b the base 11 and is on the support rod 12b attached. The pencil 46 forms with the base 11 an anti-twist device for the support rod 12a and 12b relative to the base 11 . The pen is also used 46 locking the base 11 in the set height position, as described below.

The headrest 10 includes a relative to the base 11 headrest part that can be moved in the direction of x1 and x2 13th with a head contact surface 20th . The headrest part 13th is movable in direction x1 towards the head of the seat occupant or in the opposite direction x2 away from the head. The headrest part 13th includes two bearing elements 14a and 14b that are attached to a headrest shell 41 are attached. The head rest shell 41 forms with a rear panel 17th a housing of the headrest 10 . On the head support shell 41 are also a cushion 15th as well as a reference 16 attached.

By means of a locking device 42 carried out by a user on an actuation 19th can be operated, the z-position of the base 11 as well as the X position of the headrest part 13th be unlocked. When actuated 19th it is one from the housing wall of the bezel 17th exposed area, which can be deformed inwards and which is moved back into the original shape by the elastic restoring force of the material when the load is removed. The locking device 42 includes a locking slide 35 to lock the z-position of the base 11 relative to the support bars 12a and 12b as well as a locking slide 36 to lock the set X position. The locking slide 35 and 36 are movable in the directions y1 and y2 by a spring 48 loaded in direction y2 in the locking position. You can by means of the actuation 32 be moved in direction y1 into the release position.

The locking slide 35 includes locking arrangements 51a and 51b , which have detent seats spaced apart from one another in the z-direction, which with the pins 46 are engageable. The locking slide 36 includes locking bars 52a and 52b as 53a and 53b , with locking seats of the bearing elements spaced apart from one another in the x-direction 14a and 14b cooperate. The locking seats are on the top and bottom of the bearing elements 14a and 14b educated.

By means of the handle 19th that with one actuation 32 cooperates, can the locking slide 35 and 36 be moved from the locking position to a release position. The operation 32 is designed in the present embodiment as a lever which is pivotable about a pivot axis a3 in the directions u1 and u2. The pivot axis a3 is from a bearing axis 49 formed in a seat 50 is pivotably mounted. The handle could alternatively be formed, for example, by a push button. The headrest part 13th can then be moved in both the X and Z directions.

The bearing elements 14a and 14b are part of a guiding device 43 . As from the 5 and 6th the bearing elements can be seen 14a and 14b on the base part 11 guided. The bearing element 14a includes tooth splints for this 22a and 22b and the bearing element 14b includes aligners 24a and 24b . The aligners 22a and 24a of the bearing element 14a are spaced from one another in the z-direction and the teeth face one another. The racks are in the same way 22b and 24b of the bearing element 14b at a distance from one another in the z-direction and the teeth face one another.

On the base part 11 are toothed shafts 38 and 39 rotatably mounted. The splined shafts 38 and 39 are between the racks 22a and 24a as 22b and 24b arranged. The splined shaft 38 includes gears 21 a and 21b, the one with the rack rails 22a and 22b comb and the splined shaft 39 includes gears 23a and 23b the ones with the aligners 24a and 24b are engaged. Also, the gears are 21a and 23a as well as the gears 21b and 23b in engagement with each other. In the present exemplary embodiment, the gears are molded onto the respective shaft. Alternatively, the gears could also be attached to the shaft. All gears 21a , 21b , 23a , 23b have the same diameter and are coaxial with the respective splined shaft 38 respectively. 39 arranged. The gears have spokes 30th on. The gears and the racks are provided with helical teeth. Alternatively, however, the toothing could also be designed, for example, as a straight toothing.

In this way is the headrest part 13th guided in such a way that tilting around the X, Y and Z axes is prevented.

The headrest 10 comprises a pressing device 40 . The pressing device 40 ensures play-free and rattle-free guidance of the headrest part 13th . The pressing device 40 includes wheels 25a and 25b , with the wheel 25a the gear 21a and the wheel 25b the gear 21b assigned. The gear 23a is a wheel 27a and the gear 23b a wheel 27b assigned. According to 8th are the wheels 25a and 25b coaxial with a longitudinal center axis a1 of the splined shaft 38 and the wheels 27a and 27b coaxial with a longitudinal center axis a2 of the splined shaft 39 educated.

The wheels 25a and 25b have treads 26a and 26b and the wheels 27a and 27b have treads 28a and 28b on. The treads 26a and 28a as 26b and 28b are in contact with each other and roll when the headrest part 13th is moved in direction x1 or x2 and thereby the splined shafts 38 and 39 be rotated from each other.

The tread 26a also stands with a flat running surface 33a a running rail 31a and the tread 26b with a flat running surface 33b a running rail 31b in contact. The tread 33a is on the side of the dental splint 22a and the tread 33b is on the side of the dental splint 22b arranged. All wheels 25a , 25b , 27a , 27b wise spokes 29 on.

The tread 28a stands with a level running surface 34a of the bearing element 14a and the tread 28b with a flat running surface 34b of the bearing element 14b in contact. The tread 34a is on the side of the dental splint 24a and the tread 34b is on the side of the dental splint 24b arranged. The tread 34a is on a track 37a of the bearing element 14a and the tread 34b is on a track 37b of the bearing element 14b educated. The rails 37a and 37b are areas of the respective bearing element 14a respectively. 14b that are in sliding contact with the base 11 stand.

Each cooperating pair of running wheel and running rail is arranged with respect to one another such that there is an interference fit between the surfaces of running wheel and running rail. In addition, the splined shafts lie between the running wheels 38 and 39 an interference fit. The wave 38 is therefore in direction z1 and the shaft 39 loaded in direction z2. In this way there is a tolerance compensation between the teeth, with which play between the teeth and thus annoying rattling noises are prevented.

• Zunächst werden die Lagereinleger 44a und 44b an der Basis 11 montiert. Danach wird der Verriegelungsschieber 35 durch eine seitliche Öffnung 45 der Basis 11 eingesetzt. Im Anschluss werden die Tragstangen 12a und 12b in dafür vorgesehene Öffnungen an der Unterseite der Basis 11 montiert. Jede Tragstange 12a und 12b wird mittels eines Stiftes 46 gesichert. Ein mit der Tragstange 12a verbundener Stift 46 durchgreift ein Langloch 47a und ein mit der Tragstange 12b verbundener Stift 46 durchgreift ein Langloch 47b der Basis 11. Das Kopfanlageteil 13 ist auf diese Weise in die Richtungen z1 und z2 an den Tragstangen 12a und 12b bewegbar.

The headrest is assembled as follows:

• First are the warehouse depositors 44a and 44b at the base 11 assembled. Then the locking slide 35 through a side opening 45 the base 11 used. Following are the support poles 12a and 12b into the openings provided for this purpose on the underside of the base 11 assembled. Every support rod 12a and 12b is made by means of a pen 46 secured. One with the carrying bar 12a connected pin 46 reaches through an elongated hole 47a and one with the support rod 12b connected pin 46 reaches through an elongated hole 47b the base 11 . The headrest part 13th is in this way in the directions z1 and z2 on the support rods 12a and 12b moveable.

Then the slide 36 to lock the x-adjustment with the help of openings 18a , 18b , 18c , 18d the base 11 at the base 11 assembled. After that, the return spring 48 at the base 11 latched. The operation 32 comes with a bearing axis 49 with the seat 50 the base 11 engaged and at a lower portion with the base 11 latched. This is followed by the splined shafts 38 and 39 with their seat at the base 11 engaged.

On the housing shell 41 become the cushion 15th and the reference 16 fixed. Then the bearing elements 14a and 14b with their seat on the housing shell 41 attached. Every bearing element 14a and 14b is attached to the housing shell by means of a pin (not shown) 41 secured. This is followed by the headrest part 13th with the bearing elements 14a and 14b pushed into the base first. Finally, the aperture 17th at the rear end regions of each bearing element 14a and 14b as well as on the headrest part 13th attached.

Claims (11)

Vehicle equipment part with a movable first part and a second part fixed to the vehicle, the first part being guided on the second part by means of a guide device (43), the guide device (43) comprising at least one toothed rail (22a, 22b, 24a, 24b) which with a gear (21a, 21b, 23a, 23b) is in engagement, wherein the rack (22a, 22b, 24a, 24b) is assigned to one of the parts and the gear (21a, 21b, 23a, 23b) is assigned to the other part, thereby characterized in that the guide device (43) additionally comprises a tolerance compensation device which comprises at least one running rail (31a, 31b, 37a, 37b) which is assigned to one of the parts and which engages with an impeller (25a, 25b, 27a, 27b) which is assigned to the other of the parts, the running wheel (25a, 25b, 27a, 27b) and / or the running rail (31a, 31b, 37a, 37b) being designed to be elastically deformable and between the running rail (31a, 31b, 37a, 37b) and the impeller (25a, 25b, 27a, 27b) an interference fit is formed so that the cooperating gears (21a, 21b, 23a, 23b) of the first part and the second part are loaded in a defined position . Vehicle equipment part according to Claim 1 , characterized in that the guide device (43) has two horizontally and / or vertically spaced apart toothed rails (22a, 22b, 24a, 24b) and a corresponding number of toothed wheels (21a, 21b, 23a, 23b). Vehicle equipment part according to Claim 1 or 2 , characterized in that two gearwheels (21a, 21b, 23a, 23b) are assigned to a gearwheel shaft (38, 39). Vehicle equipment part according to one of the preceding claims, characterized in that the guide device (43) comprises two gear shafts (38, 39), each gear shaft (38, 39) being provided with two gear wheels (21a, 21b, 23a, 23b) and each Gear (21a, 21b, 23a, 23b) engages with a toothed rail (22a, 22b, 24a, 24b). Vehicle equipment part according to one of the preceding claims, characterized in that two gears (21a, 21b, 23a, 23b) of a first gear shaft (38) and two gears (21a, 21b, 23a, 23b) of a second gear shaft (39) are in engagement . Vehicle equipment part according to one of the preceding claims, characterized in that the guide device (43) is assigned at least one pair of running wheels (25a, 25b, 27a, 27b) and toothed rails (22a, 22b, 24a, 24b). Vehicle equipment part according to one of the preceding claims, characterized in that a gear shaft (38, 39) has at least one impeller (25a, 25b, 27a, 27b) and one with a gear (21a, 21b, 23a, 23b) of the gear shaft (38, 39 ) at least one running rail (31a, 31b, 37a, 37b) is assigned to interacting toothed rail (22a, 22b, 24a, 24b). Vehicle equipment part according to one of the preceding claims, characterized in that each toothed wheel (21a, 21b, 23a, 23b) is assigned a running wheel (25a, 25b, 27a, 27b) and each toothed rail (22a, 22b, 24a, 24b) is assigned a running rail ( 31a, 31b, 37a, 37b), a running wheel (25a, 25b, 27a, 27b) and a running rail (31a, 31b, 37a, 37b) being in engagement. Vehicle equipment part according to one of the preceding claims, characterized in that the running rails (31a, 31b, 37a, 37b) are arranged adjacent to the toothed rails (22a, 22b, 24a, 24b) and that the running wheels (25a, 25b, 27a, 27b) the Gears (21a, 21b, 23a, 23b) are arranged adjacent. Vehicle equipment part according to one of the preceding claims, characterized in that the vehicle equipment part is a headrest (10), the first part being a headrest part (13) which is movable relative to a base (11) as the second part. Vehicle equipment part according to one of the preceding claims, characterized in that the vehicle equipment part is an armrest, the first part being an armrest adjustable in the longitudinal direction or a height adjustable armrest which is guided on a base (11) part.

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